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Suprahyoid and inferior constrictor release for laryngeal lowering
R P Zitsch1, J B Mullins, J Templer
1Department of Surgery, University of Missouri-Columbia Hospital and Clinics, USA.
Archives of Otolaryngology--Head & Neck Surgery
|November 1, 1995
Summary
Suprahyoid and inferior constrictor releases effectively reduce tension in tracheal anastomosis. These techniques allow safe closure of up to 4-cm tracheal defects, crucial for surgical outcomes.
Area of Science:
- Surgical Oncology
- Anatomy
- Biomechanics
Background:
- Tracheal resection and anastomosis require careful tension management.
- Suprahyoid and inferior constrictor muscle releases are surgical techniques to reduce tension.
- Quantifying the effectiveness of these releases is critical for safe surgical practice.
Purpose of the Study:
- To accurately quantify the tension reduction provided by suprahyoid and inferior constrictor releases.
- To determine the maximum safe tracheal defect size that can be closed using these releasing techniques.
Main Methods:
- Intraoperative tension measurements were taken using a spring balance at 0.5-cm intervals.
- Measurements were performed on the laryngotracheal unit after tracheal division in eight patients undergoing total laryngectomy.
- Patients with specific conditions like cervical soft-tissue involvement were excluded.
Main Results:
- Combined suprahyoid and inferior constrictor releases allow a 2-cm tension-free inferior displacement.
- Suprahyoid release alone enables 3.5 cm of inferior laryngotracheal displacement without exceeding critical anastomotic tension (1700 g).
- Using both releasing techniques together permits 4 cm of inferior displacement without significantly exceeding critical tension.
Conclusions:
- A 2-cm tracheal defect can be closed without releasing procedures.
- Suprahyoid release alone safely closes defects up to 3.5 cm.
- Combined suprahyoid and inferior constrictor releases are recommended for uncomplicated closure of 4-cm tracheal defects.